United States Patent and Trademark Office OG Notices: 04 December 2001

                 Patents Reinstated Due to the Acceptance of a
                      Late Maintenance Fee From 10/19/01

Patent          Serial          Filing          Issue           Granted
Number          Number          Date            Date            Date

4,825,321       07/052,709      05/20/87        04/25/89        10/23/01
4,845,647       06/694,423      01/24/85        07/04/89        10/23/01
5,012,690       07/501,573      03/29/90        05/07/91        10/22/01
5,013,453       07/042,565      04/16/87        05/07/91        10/22/01
5,219,180       07/919,453      07/27/92        06/15/93        10/22/01
5,231,943       07/881,158      05/11/92        08/03/93        10/23/01
5,244,372       07/967,293      10/27/92        09/14/93        10/23/01
5,297,648       08/061,470      05/17/93        03/29/94        10/22/01
5,322,309       07/974,450      11/12/92        06/21/94        10/22/01
5,445,624       08/184,266      01/21/94        08/29/95        10/23/01
5,456,966       08/289,236      08/11/94        10/10/95        10/19/01
5,587,012       08/493,411      06/22/95        12/24/96        10/22/01
5,613,715       08/507,871      07/27/95        03/25/97        10/24/01
5,619,035       08/577,199      12/22/95        04/08/97        10/22/01
5,633,839       08/602,461      02/16/96        05/27/97        10/23/01
5,637,396       08/437,564      05/09/95        06/10/97        10/24/01
5,638,077       08/433,654      05/04/95        06/10/97        10/22/01